Bk
Berkelium is a Actinides element with the symbol Bk and atomic number 97. Located in period 7 (f-block), it has an atomic weight of 247 u and is classified as a solid at standard temperature and pressure. First identified in 1949 by Glenn T. Seaborg in USA. Berkelium has an electron configuration of [Rn] 5f⁹ 7s² with 7 electron shells containing 2, 8, 18, 32, 27, 8, 2 electrons respectively. It is commonly used in: research only.
锫是一种锕系元素元素,符号为Bk,原子序数为97。位于第7周期(f区),原子量为247 u,在标准温度和压力下为固体。于1949 年首次被确认,由Glenn T. Seaborg发现。锫的电子排布为[Rn] 5f⁹ 7s²,具有7个电子层,分别含有2、8、18、32、27、8、2个电子。常见用途包括:仅用于研究。
Basic Properties基本属性
- Atomic Number原子序数
- 97
- Atomic Weight原子量
- 247 u
- Category分类
- Actinides锕系元素
- State at STP标准状态
- Solid固体
- Period周期
- 7
- Group族
- —
- Block区
- f-blockf区
Physical Properties物理性质
- Melting Point熔点
- +1050°C
- Boiling Point沸点
- —
- Density密度
- 14.78 g/cm³
- Crystal Structure晶体结构
- Hexagonal Close-Packed (HCP)六方密堆积
- Atomic Radius原子半径
- 170 pm
- Ionic Radius离子半径
- —
- Electronegativity电负性
- 1.3
Electron Configuration电子排布
- Config电子构型
- [Rn] 5f⁹ 7s²
- Shells电子层
- 2, 8, 18, 32, 27, 8, 2
- Oxidation States氧化态
- +3, +4
Electron Shells电子层结构
Discovery发现历史
- Year年份
- 19491949 年
- Discoverer发现者
- Glenn T. Seaborg
- Country国家
- USA美国
Uses & Applications用途
Research only
仅用于研究
Common Compounds常见化合物
—
—
Room Temperature常温特性
silvery
银色
Did You Know? 你知道吗?
The name Berkelium comes from Bk and it was first identified in 1949.
锫的名称来源于其符号Bk,于1949年首次被确认。
Memory Aid记忆口诀
Named after Berkeley, California
以加州伯克利命名
Appearance外观
silvery
银色
Safety Information安全须知
- Radioactive — handle only in licensed facilities with proper shielding.
- 放射性元素——仅在持证设施中并使用适当防护的情况下处理。